Anonymous hackers have vowed “total war” on Donald Trump and threatened to “dismantle his campaign”.
The group has posted a video asking supporters of the hacktivist group to attack Mr Trump’s campaign websites and conduct cyber attacks on the Republican hopeful.
Anonymous had already threatened war on Mr Trump in December, after his controversial comments about banning Muslims from the US. That campaign included cyber attacks on various websites, taking them down for just a few hours but causing no lasting damage.
It also claimed credit for hacking into Mr Trump's voicemail, and apparently leaking messages from journalists and supporters.
The group claimed that its new attacks would aim to bring Mr Trump’s campaign to an end.
"We need you to shut down his websites, to research and expose what he doesn't want the public to know. We need to dismantle his campaign and sabotage his brand.
“We are encouraging every able person with a computer to participate in this operation. This is not a warning, this is a declaration of total war. Donald Trump – it is too late to expect us."
The group posted a list of targets that should be taken down, which included corporate website trump.com and campaign site donaldjtrump.com. It intends to launch attacks on the sites on 1 April, the group said.
Donald Trump's most controversial quotes
Donald Trump's most controversial quotes
1/14 On Isis:
"Some of the candidates, they went in and didn’t know the air conditioner didn’t work and sweated like dogs, and they didn’t know the room was too big because they didn’t have anybody there. How are they going to beat ISIS?"
2/14 On immigration:
"I will build a great wall — and nobody builds walls better than me, believe me —and I’ll build them very inexpensively. I will build a great, great wall on our southern border, and I will make Mexico pay for that wall. Mark my words."
3/14 On Free Trade:
"Free trade is terrible. Free trade can be wonderful if you have smart people. But we have stupid people."
PAUL J. RICHARDS | AFP | Getty Images
4/14 On Mexicans:
"When Mexico sends its people, they’re not sending their best. They’re sending people that have lots of problems. They’re bringing drugs. They’re bringing crime. They’re rapists."
5/14 On China:
"I just sold an apartment for $15 million to somebody from China. Am I supposed to dislike them?... I love China. The biggest bank in the world is from China. You know where their United States headquarters is located? In this building, in Trump Tower."
6/14 On work:
"If you're interested in 'balancing' work and pleasure, stop trying to balance them. Instead make your work more pleasurable."
7/14 On success:
"What separates the winners from the losers is how a person reacts to each new twist of fate."
8/14 On life:
"Everything in life is luck."
9/14 On ambition:
"You have to think anyway, so why not think big?"
10/14 On his opponents:
"Bush is totally in favour of Common Core. I don't see how he can possibly get the nomination. He's weak on immigration. He's in favour of Common Core. How the hell can you vote for this guy? You just can't do it."
11/14 On Obamacare:
"You have to be hit by a tractor, literally, a tractor, to use it, because the deductibles are so high. It's virtually useless. And remember the $5 billion web site?... I have so many web sites, I have them all over the place. I hire people, they do a web site. It costs me $3."
12/14 On Barack Obama:
"Obama is going to be out playing golf. He might be on one of my courses. I would invite him. I have the best courses in the world. I have one right next to the White House."
13/14 On himself:
"Love him or hate him, Trump is a man who is certain about what he wants and sets out to get it, no holds barred. Women find his power almost as much of a turn-on as his money."
14/14 On America:
"The American Dream is dead. But if I get elected president I will bring it back bigger and better and stronger than ever before and we will make America great again."
The attack has been launched because Mr Trump’s “inconsistent and hateful campaign has not only shocked the United States America, [but has] shocked the entire planet with your appalling actions and ideas”, a supporter of the group said in a video posted this week. The video was filmed in the usual style, showing a person with a Guy Fawkes mask and playing computer-generated audio.
Supporters of the group have taken to declaring “total war” on a range of subjects in recent months, including everything from Isis to the Japanese government. The new declaration was laughed off by some, including The Next Web site, which wrote that “Anonymous was once a group that inspired a nation by taking down those that were (arguably) worth the effort” but had since become “a running joke about Vitamin D deficient 30-somethings running around in Guy Fawkes masks”.Reuse content